Stock market today: Dow, S&P 500, Nasdaq fall as Samsung, DeepSeek spark chip sell-off and oil rises - Yahoo Finance

By Amalya Dubrovsky | Published: Jul 07, 2026

US stocks fell on Tuesday after Samsung's (016360.KS) quarterly results and reports that China's DeepSeek is developing its own AI chip triggered renewed selling in the semiconductor sector. The Dow… [+1148 chars]